Apple iOS 12.0.1 reportedly fixes one issue, only to create another issue for iPhone users.

Apple released iOS 12 as a major upgrade over iOS 11 on September 17. The update brings few new features like Group FaceTime with support for up to 32 people and grouped notifications on iPhone and iPads. However, the update was not short of bugs that most users found to be rather inconvenient.

Since the release of iOS 12, most iPhone users have reported a weird charging bug that caused limits charging on the new iPhone XS and iPhone XS Max. Alongside the charging issue, most users also reported intermittent issues with WiFi connection. Apple released iOS 12.0.1 as an incremental update that was designed to fix some of these issues reported by iPhone users. The update did manage to fix the known charging problem where Apple deemed the lightning port unusable after certain period of time.

However, those who have upgraded to the new version of iOS 12, are facing a new problem altogether. After the update, a number of iPhone users have reported facing problems such as broken phone calls, poor network and signal connectivity and severe battery drain on their iPhone. Some iPhone users took to Twitter to complain about new issues faced by them after the update.

@AppleSupport pleaseeee Fox the battery life bug on iOS 12.0.1 I rely on this phone for work and I went from 94% to 88% in 20 minutes and just from talking on the phone also battery saver was on!!!!

An iPhone user wrote on Twitter that his iPhone’s battery drained from 94 percent to 88 percent in mere 20 minutes. The user also explained that the battery drain happened with just voice calls and no other intensive application running in the background. There are also reports of iOS 12.0.1 breaking FaceTime and making it impossible to send pictures or initiate FaceTime calls.

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While iOS 12.0.1 update fixes the charging issue on iPhone Xs and iPhone Xs Max, those using older models like the iPhone 6s are reporting the issue has not been fixed. One user wrote on Twitter, Plugging in USB cable from Mac still can cause phone [iPhone 6s] to not start charging until phone is unlocked.

Among other fixes, the iOS 12 also reportedly fixes an issue with iMessage which caused it to deliver personal messages to wrong and multiple people. “Apple has been telling users that iMessage accidentally sending messages to wrong people is actually a feature for iOS 12 and that it is happening because Apple is now organising all contacts by Apple ID, so if family members or friends share an ID now all these messages are shared simultaneously with everyone who has that ID,” Forbes reported.

Watch: Apple iPhone Xs, iPhone Xs Max Hands-On

Apple iOS 12’s adoption is off to a great start and App Store support for developers indicates 50 percent of all iOS devices are running the newest version. The update was meant to fix the buggy experience that iPhone users had grown to complain on iOS 11 but it does not seem to have pleased all iPhone users.